Pipe-coupling.



F. J. GLOVER.

PIPE COUPLING.

APPLIOATIoN FILED 11110.14, 1910,

1,037,238. Patented Sept. 3, 1912.

Eeg- E 551311114 @Hom/1! i j.

FREDERICK J. eLovEE, oF s1Lv1s ,`1LL1No1s.

Specicaton of Letters Patent.

Patented Sept. 3, 1912.

Application led December 14, 1910. Serial No. 597,366.

struction and composed of few parts; will eifectually prevent the leakage of the Huid,

and which may be easily coupled or uncoupled. t v

With tthese objects in view, my invention consists of a coupling comprising a male coupling member and a female coupling member adapted to be interlocked in coupled relations and embodying improved features of construction, which will be fully described in the lspecification and4 the novel parts pointed out in the claim.v

In the accompanying drawings: Figure 1 is a view, partly in elevation and partly in longitudinal section, showing my improved coupling with the members connected. Fig. 2 is an elevation of the male member of the coupling. Fig. 3 is a transverse section on the line a--a of Fig. 2. Fig. 4 is an end view of the female member ofthe coupling. Fig. 5 is an elevat-ion of the same.

Referring to the drawings: My' improved coupling comprises a male member 1 and a female member 1, the latter being hollow and adaptedv to receive the male member, which in the coupling action is inserted in the female member and interlocked therewith 'in a manner to be hereinafter more fully described. Y l

The members are formed each with an opening extending longitudinally therethrough for the passage of the fluid, and at their outer ends they are suitably formed to adapt them to be connected to the parts in connection with which the coupling is to be used. In Fig. 1, the outer ends of the members are formed with ribbed nipples to adapt the couplin to be connected with a flexible hose, whi e in Figs. 2 and 5 the members are shown as provided with thread- 4ed ends toadapt them to be connected to tanks, reservoirs, and the like.`

The male member 1 is formed with an enlarged cylindrical portion 2, at the end of which is a reduced neck 3 separated from the enlarged portion by 'an annular shoulderv 4and at the end of this neck is a head 5, whose junction with the reduced neck, forms an annular shoulder 6 considerably less in height than the shoulder 4. About midway of the length of the enlarged cylindrical portion 2, there are provided two outwardly extending locking lugs 7 and 7 disposed at diametrically opposite oints on the coupling member, and adapted) to be received respectively by two similarly situated slots 9 and 9a extending longitudinally for some distance into the inner end of the female member. The female member is formed with an enlarged internal bore 10 and a reduced bore 11 ladapted to receive respectively, the enlarged cylindrical portion 2 and the head 5 of the male member, as shown in Fig. 1. The slots 9 and 9a in the female member communicate respectively with recesses 12 and 12il extending through the side of the female member a short distance circumferentially in opposite directions, which recesses are adapted to receive the locking lugs on the male, member when the latter is turned slightly within the female member afterl the lugs have been entered in the longitudinal slots, such turning movement- `causing the locking lugs to pass laterally into the recesses until arrested by contact with the end walls 12b and 12c of the recesses. Atl the side of each slot, where it adjoins its recess, a stop lug 14 is arranged and adjoins a flange 15 fixed to the inner end of the female member, this flangeV constituting one of the side walls of each recess. The

ylocking lugs on the male member. are .ada t latter from shifting laterally in the recesses. In order to seat the locking lugs in their locking positions, they are entered in the slots'in the female member and moved sutiiciently far in a longitudinal direction to clear the stop lugs, whereupon the male member is turned slightly within the female member, with the result that t-he locking lugs will be carried past the respective stop lugs, and finally the male member is drawn out-ward relatively to the female member in a longitudinal direction, thereby seating the locking lugs between the sto-p lugs and end walls of the recesses and against the front walls ofthe same. 1 In this position of the parts, the locking lugs. cannot ,be again entered into t he longitudinal slots without first moving the male member'of the coupling longitudinally into ,the female member in order to cause the locking lugs to free the stop lugs.

In order that the part-s may be held in coupled relations with no danger of accidental separation, and in order that a liquidtight joint may be formed between Athe intertting portions of the two members of the coupling, I provide a compressible gasket 16 of rubber or other similar elastic material, which gasket encircles the reduced neck v3 of the male member, and is held thereon from escape' bythe shoulder, 4 at one endvand -by the head 5 at the other end. This gasket is of such diameter that when not under compression endwise, it will enter the enlarged bore of the femalel member snugly, a considerable portion of the end of the gasket being exposed beyond the head. 5. This exposed portion ofthe end of the gasket is adapted, when the male member isv inserted longitudinally into the female member, to contactwith the annular shoulder 6a on the female member, the continued longitudinal movement of the male lmember causing the gasket to be compressed endwise against said shoulder and causing it to expand radially so that its outer surface will bind firmly and fluid-tight against the inte,- rior of the enlarged bore of the female member. The longitudinal movement of the male member is continued until the locking lugs have passed or cleared the stop lugs, and then the male member is turned sli htly Within the female member to cause the ocking lugs to travel in the lateral recesses and until, in their travel, they have passed or cleared .the stop lugs in this direction,

whereupon the parts being released b the hands, the expansion of the compresse gasket will force the male member outwardly slightly in a longitudinal direction and will seat its lockingvlugs between the stop lugs and ends of the recesses and against the flan e 15, in which position the parts will be yieldingly held by the compressed gasket.

gasket performs the double function of holding the parts of the coupling yieldingly interlocked, and of sealing the inter-fitting parts liquid-tight. Further, it will be seen that by reason of the fact that the gasket is inclosed between the opposite shoulders on the male and female members, and the opposingsurfaces on said members, it is 'practically isolated from contact of the fluid therewith, so that the liability of the latter finding its entrance between the parts is reduced to a minimum. Further, by reason of the fitting of the enlarged and reduced port-ions of the male member within the corresponding bores of the female member, the parts are properly centered in the coupling action, and are held in fixed rigid relations when coupled.

The device asa whole is of extreme simplicity, comprising but three parts, and when the members are coupled together, the connection is rigid, strong and fiuidtight, and free from projecting parts, such as bolts, bands and the like. f

In order to facilitate the coupling and uncoupling actibns, the two members may be provided with roughened or angular portions, such as the hexagonal heads as shown.

In the accompanying drawings I have Y .ends to be attained, but it will be understood that the invention is not limited to any particular form or construction of the parts except in so far as such limitations are specified in the claim.

Having thus described my invention, what I claim is:- v

' In a pipe coupling, the combination of a male member provided with a locking lug, an annular shoulder, a reducedI neck adj oining the shoulder and a terminal centering head, a gasket surrounding the neck between the shoulder and head, a female member provided at one'end with an annular ange, an enlarged bore to receive the shoulder and gasket, and having a reduced bore -to receive the terminal head, the said female member being provided with a lon itudinal slot to receive the locking lug an with a circumferential recess extending through its side, one wall of which recess is formed by the said annular flange, and into which recess said locking lug is adapted to be turned, and a stop lug in the recess between hand this 23rd day 'of November, 1910, in the longitudinal slot and the end of the rethe presence of two attesting witnesses.

cess with which stop lug the locking lug v is aapted to be interlocked between it and ,FREDERICK 'J' GLOVER' 5 the end of the recess and in forcible engage- Witnesses:

ment with the flange. OTTO UNSLEBEN,

In testimony whereof I hereunto set my LUTBEn KESSLER.- 

